1989 Volume 38 Issue 427 Pages 341-346
The purpose of the investigation is to devise a procedure for the computer aided design of the injection moulding process for FRTP (Fibre Reinforced Thermo-Plastics), taking the fibre orientation into consideration.
This system consists of a series of analyses of flow, the flow fibre orientation and warp. The state of the composites in the core layer is two-dimensionally analysed by taking the friction against the upper and lower skin layer into consideration. The fibre orientation analysis is carried out, where it is assumed that the fibres are tracked rotating according to the velocity gradient tensor obtained in each element from the numerical results of the flow state analysis. The relationship between the fibre orientation factor and temperature depending material constants are determined and the warp occurring in a product is simulated. The above system was applied to two-dimensional thin plates.
In this paper, analysis of the flow state of the three-dimensional structure of plate construction, such as a box was tried out. Two-dimensional analysis was used in each plate and constructed by the coordinate transformation along the edge element. In consideration of the flow state on the edge, the frictional resistance was varied in the element. The result was in good agreement with the experiment.
